Answer:
B) yes, because the new sentence shows the link between the ideas.
Can you be more specific?
Answer:
<em>Social media addiction is a behavioral addiction that is characterized as being overly concerned about social media, driven by an uncontrollable urge to log on to or use social media, and devoting so much time and effort to social media that it impairs other important life areas.</em>
In number 12 (up neatly) is a prep phrase